{"id":215544,"date":"2025-05-17T06:32:26","date_gmt":"2025-05-17T06:32:26","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=215544"},"modified":"2025-05-17T06:52:07","modified_gmt":"2025-05-17T06:52:07","slug":"which-of-these-is-an-optical-medium-of-storage-2","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/05\/17\/which-of-these-is-an-optical-medium-of-storage-2\/","title":{"rendered":"Which of these is an optical medium of storage"},"content":{"rendered":"\n<p>Which of these is an optical medium of storage?<br>a. Blu-ray disc<br>b. Solid state drive<br>c. Cloud storage<br>d. Hard disk drive<\/p>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-0-color\">The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n<p><strong>Correct Answer: a. Blu-ray disc<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Explanation:<\/h3>\n\n\n\n<p><strong>Optical storage<\/strong> is a type of data storage that uses <strong>laser technology<\/strong> to read and write data. It involves the use of optical media, which are typically flat, round discs made of polycarbonate plastic and coated with a reflective material. Among the given options, the <strong>Blu-ray disc<\/strong> is the only example of optical storage.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">1. <strong>What is a Blu-ray Disc?<\/strong><\/h4>\n\n\n\n<p>A <strong>Blu-ray Disc (BD)<\/strong> is a high-capacity optical disc format designed to supersede DVDs. It can store <strong>25 GB per layer<\/strong>, and dual-layer discs can hold up to <strong>50 GB<\/strong>. Blu-ray uses a <strong>blue-violet laser<\/strong> with a shorter wavelength (405 nm) than the red laser used in DVDs, allowing for more precise reading and greater data storage density.<\/p>\n\n\n\n<p>Blu-ray discs are commonly used for <strong>high-definition video<\/strong>, games, and large software packages. They can be <strong>read-only (BD-ROM)<\/strong>, <strong>recordable (BD-R)<\/strong>, or <strong>rewritable (BD-RE)<\/strong>.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">2. <strong>Why Not the Other Options?<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Solid State Drive (SSD)<\/strong>: This is a <strong>non-volatile storage device<\/strong> that uses <strong>flash memory<\/strong> to store data. SSDs are faster and more durable than traditional hard drives but are <strong>not optical<\/strong>\u2014they rely on <strong>electronic circuits<\/strong>, not lasers.<\/li>\n\n\n\n<li><strong>Cloud Storage<\/strong>: This refers to storing data on <strong>remote servers<\/strong> accessed via the internet. It&#8217;s a <strong>virtual storage solution<\/strong> and doesn&#8217;t rely on any specific physical medium like optical discs. It uses a combination of magnetic and solid-state drives in data centers.<\/li>\n\n\n\n<li><strong>Hard Disk Drive (HDD)<\/strong>: An HDD stores data on <strong>magnetically coated platters<\/strong>. It uses a mechanical read\/write head, not a laser, so it falls under <strong>magnetic storage<\/strong>, not optical.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Summary:<\/h3>\n\n\n\n<p>Only the <strong>Blu-ray disc<\/strong> fits the definition of <strong>optical storage<\/strong>, as it uses <strong>laser light<\/strong> to read and write data. The other options involve <strong>electronic<\/strong> or <strong>magnetic<\/strong> data access methods, which are fundamentally different from optical media.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Which of these is an optical medium of storage?a. Blu-ray discb. Solid state drivec. Cloud storaged. Hard disk drive The Correct Answer and Explanation is: Correct Answer: a. Blu-ray disc Explanation: Optical storage is a type of data storage that uses laser technology to read and write data. It involves the use of optical media, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-215544","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/215544","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=215544"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/215544\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=215544"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=215544"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=215544"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}